FYI - whenever posting Amazon links do it like this (for your link specifically):

• https://www.amazon.com/Liposomal-Nattokinase-Serrapeptase-Enzyme-Supplement/dp/B0D41N8QD5

Drop everything after what I assume is the product ID (B0D41N8QD5).

This company claims to have done third party GMP testing, but the stamp is nowhere on the box or bottle. Amazon is known for sellers false advertising GMP certification while never paying for it, because that would mean they would have to prove what is actually in their stuff. NEVER buy any supplement on Amazon unless GMP is stamped clearly on the bottle itself. Companies that pay for that certification will indeed put it on the bottle. This company is shady as fuck! Look at the 1 star reviews. Oh wait... they blocked those, so proves my point. There is one 1 star review in the last photo though, also proving my point.

Edited to add - Also make sure it's GMP certification and not "GMP facility" certified - one is about what is actually in the product and the other is about where it's made. Companies have to pay a lot for GMP testing, and can only display that stamp when the test results show that their claims of what they say are in the product are actually in it. Lately a lot of Chinese companies are claiming to have GMP in the Amazon listing and claim to be made in the USA, and they are lying in those listings. Make sure before you buy from a GMP listing that they display actual pictures of that stamp on their product, and also make sure that they are not hiding any one star reviews left.